We have been making and selling char cloth and charcoal products in bulk and in waterproof packages for years. We have begun to activate a smal portion of our product using extremely hot steam instead of dangerous and toxic gasses used by most activated charcoal manufacturers. How do you know they have cooked all of those nasty chemicals out of the cloth or coals? You dont!!! This market is highly unregulated so be sure to buy from well known sources if they say their charcoal is activated by chemicals. More details here